Which of the Following Are Concerned with Mergers Within the UK

Which of the following are concerned with mergers within the UK?
(i) The OFT (Office of Fair Trading)
(ii) The CC (Competition Commission)
(iii) The Restrictive Practices Court
(iv) The President of the Board of Trade
(v) The European Commission

A) (i) , (ii) , (iii) and (v)
B) (i) , (iii) and (iv)
C) (i) and (ii)
D) (ii) , (iv) and (v)
E) (i) , (ii) , (iii) and (iv)